Photographic diffuser



FIG. 1 is a front perspective view of a photographic diffuser showing my new design;

FIG. 2 is a front elevational view of the photographic diffuser;

FIG. 3 is a left side elevational view of the photographic diffuser, the undisclosed right side being a mirror image;

FIG. 4 is a rear elevation view of the photographic diffuser;

FIG. 5 is a top plan view of the photographic diffuser; and,

FIG. 6 is a bottom plan view of the photographic diffuser.

The broken lines in FIGS. 1 and 4 are shown to illustrate environment only and form no part of the claimed design. 

The ornamental design for a photographic diffuser, as shown and described. 